On Tuesday, July 2, 2013 5:32:31 AM UTC-7, John Savard wrote:

As I have explained, the NASA site you quote merely put aside the

complication that 24 hours is not the Earth's real rotation period to

concentrate on the fact that the Earth's rotation is slowing, so that

the day is getting longer. So they oversimplified by leaving out this

technical matter.

"A little inaccuracy sometimes saves tons of explanation."
~Saki